Improvement in spring-bits for cleaning and enlarging wells



JAMES H. BOYD.

lmprovement in Spring Bit for Cleaning and Enlargingh Wells.

Patented Dec.26, 1871.V

UNITED u STATES PATENT QEEICE.

JAMES H. BOYD, OF MONTEREY, PENNSYLVANIA.

Specification forming part .of Letters Patent No. 122,149, datedDecember 26, 1871.

To all 'whom it may concern:

Beit known that I, JAMES H. BOYD, of West Monterey, in the county ofClarion and State of Pennsylvania, have invented a new and ImprovedSpring-Bit for Cleaning and Enlarging Wells; and I do hereby declarethat the following is a full, clear, and exact description thereof,which will enable others skilled in the art to make and use the same,reference being had to the accompanying drawing forming part of thisspecification.

' Figure 1 represents a face view, partly in section, of my' improvedwell-bit. Fig. 2 is a section of the same taken on the plane of the linec c, Fig. l. Figs. 3 and 4 are side views of the bit, showing it with along and short spring-jaw, respectively. y

Similar letters of reference indicate corresponding parts The ob]l ectof this invention is to produce a convenient tool for cleaning out' orenlarging oilwells; and the invention consists in the application, tothe shank ofthe bit, of a spring for crow d ing it against the well, andof a catch for holding the spring close to the bit during itsapplication to the well.

Ain the drawing represents the shank of my improved tool, made with ascrew, a, at its upper end, whereby it can be connected with suitablemechanism, and provided also with an outwardly-projecting steel bit, b,at the lower end.

To one face of the shank A is rigidly secured a spring, B, which, as linFigs. l, 2, and 3, extends below the bit, or, as in Fig. 4, may beshorter than the same. In a mortise of the -shank A is pivoted aspring-catch, C, which can, as in Fig.

2, be hooked over a lip, d, of the spring for holding it close to theshank, and which, when thus holding the spring, lwill project with itsouter end from the back ofthe shank.

When the tool is to be applied toa well the spring is held close to theshank by the springcatch C, so that the insertion of the tool will befacilitated. The projecting outer end ofthe catch at the same time holdsthe bit clear from the wall of thewell, preventing it from scrapingwhile be-l ing let down. As soon as the device is being worked, when inits proper place the catch will releasethe spring, causing the same tocrowd the bit against the wall of the well, as in Figs. 3 y

and 4.'

, For enlarging a well, the bit is used with the long spring, Fig. 3. Inthis case the spring will enter the smaller part of the well and causethe bit to work in the, larger vpart of the same upon the shoulder e.

For cleaning out wells the short spring is used,

B on one face having lip d, and extending below the bit, and with thepivoted spring-catch C with a hook thereon, all constructed. andarranged as and for the purpose specified.

` JAMES H. BOYD.

Witnesses G. M. HENRY,

J. M. BEST. `(124)

